• 2022-06-19
    设随机变量[tex=2.5x1.357]PWg5V4GQQafckGNgbx6gmw==[/tex] 的联合分布列为[tex=8.286x4.929]I08GkjPu5ilZ1cL3oVOjRE4sVTHAWb1Gvi9jJxpOnvgQGFRJYElTp76dCQHNW2EiJToy5XVFxu0JSBlgCu3B1uXbj6iYf+TOajaf/f9UGxe7277AvLT+uoSg/2eSnzT1hTwgxRixvf/blDxkqAeW2Hw1UzwR8F4aogEZBoPniOU=[/tex]试求[tex=7.929x2.214]hXf55bRVod3Y9t5SvIsmdH2BcILqGCkA66a7tQ+JJ49GVS4Sw9PkqI4AwRREqVxM[/tex]的数学期望.
  • 举一反三